public void SubtractOperateGivesExpectedOutputWithValidInput()
{
Subtract test = new Subtract();
Assert.AreEqual("0", test.Operate(2, 2));
Assert.AreEqual("6", test.Operate(8, 2));
Assert.AreEqual("195", test.Operate(200, 5));
Assert.AreEqual("-5", test.Operate(-2, 3));
Assert.AreEqual("0", test.Operate(0, 0));
}
public void WhenXandYMaxValue_ShouldThrowArgumentOutOfRange(
[Values(double.MaxValue)] double x,
[Values(double.MaxValue)] double y)
{
var operation = new Subtract(x, y);
Assert.AreEqual(0, operation.Operate());
}
public void WhenXMaxValueYMinValue_ShouldArgumentException(
[Values(double.MaxValue)] double x,
[Values(double.MinValue)] double y)
{
var operation = new Subtract(x, y);
Assert.Throws <ArgumentException>(() => { var result = operation.Operate(); });
}
public void SubtractXYNegative(
[Values(-2, -3)] double x,
[Values(-4, -5)] double y
)
{
var operation = new Subtract(x, y);
Assert.AreEqual(x - y, operation.Operate());
}
public void SubtractXYPositive(
[Values(2, 3)] double x,
[Values(4, 5)] double y
)
{
var operation = new Subtract(x, y);
Assert.AreEqual(x - y, operation.Operate());
}